Andrew and the Birthday

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Today is Andrew's birthday. He has invited N friends for celebrating it, and now he needs to prepare the table for them. All his friends will be sitting in a row on the seats numbered from 1 to N, inclusive. There are M different types of meatballs (numbered from 1 to M, inclusive). Andrew is going to serve meatballs of exactly one type at each of the seats. You are an given array A of N integer

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solution.cppC++17

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